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发明名称
摘要
申请公布号
BE679577(A)
申请公布日期
1966.10.17
申请号
BED679577
申请日期
1966.04.15
申请人
发明人
分类号
C01B33/26;C01B39/02
主分类号
C01B33/26
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代理人
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地址
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